CN1094981C - 铁损极低的高磁通密度取向电工钢板的制造方法 - Google Patents

铁损极低的高磁通密度取向电工钢板的制造方法 Download PDF

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Publication number
CN1094981C
CN1094981C CN97126011A CN97126011A CN1094981C CN 1094981 C CN1094981 C CN 1094981C CN 97126011 A CN97126011 A CN 97126011A CN 97126011 A CN97126011 A CN 97126011A CN 1094981 C CN1094981 C CN 1094981C
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China
Prior art keywords
annealing
temperature
hot
rolling
slab
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Expired - Fee Related
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CN97126011A
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English (en)
Chinese (zh)
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CN1190132A (zh
Inventor
小松原道郎
高宫俊人
千田邦浩
村木峰男
后藤千寿子
黑沢光正
田村和章
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
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Kawasaki Steel Corp
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Priority claimed from JP26968896A external-priority patent/JP3674183B2/ja
Priority claimed from JP30147496A external-priority patent/JP3415377B2/ja
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Publication of CN1190132A publication Critical patent/CN1190132A/zh
Application granted granted Critical
Publication of CN1094981C publication Critical patent/CN1094981C/zh
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1216—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the working steps
    • C21D8/1222—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1216—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the working steps
    • C21D8/1227—Warm rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the heat treatment
    • C21D8/1255—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the heat treatment with diffusion of elements, e.g. decarburising, nitriding
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the heat treatment
    • C21D8/1266—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the heat treatment between cold rolling steps
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the heat treatment
    • C21D8/1272—Final recrystallisation annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1277—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment
    • C21D8/1283—Application of a separating or insulating coating
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1216—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the working steps
    • C21D8/1233—Cold rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the heat treatment
    • C21D8/1261—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the heat treatment following hot rolling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Soft Magnetic Materials (AREA)
CN97126011A 1996-10-11 1997-10-11 铁损极低的高磁通密度取向电工钢板的制造方法 Expired - Fee Related CN1094981C (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP26968896A JP3674183B2 (ja) 1996-10-11 1996-10-11 方向性電磁鋼板の製造方法
JP269688/96 1996-10-11
JP301474/96 1996-11-13
JP30147496A JP3415377B2 (ja) 1996-11-13 1996-11-13 極めて鉄損の低い高磁束密度方向性電磁鋼板の製造方法

Publications (2)

Publication Number Publication Date
CN1190132A CN1190132A (zh) 1998-08-12
CN1094981C true CN1094981C (zh) 2002-11-27

Family

ID=26548880

Family Applications (1)

Application Number Title Priority Date Filing Date
CN97126011A Expired - Fee Related CN1094981C (zh) 1996-10-11 1997-10-11 铁损极低的高磁通密度取向电工钢板的制造方法

Country Status (6)

Country Link
US (1) US5885371A (de)
EP (1) EP0835944B1 (de)
KR (1) KR100352675B1 (de)
CN (1) CN1094981C (de)
BR (1) BR9707089A (de)
DE (1) DE69705282T2 (de)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1290173B1 (it) * 1996-12-24 1998-10-19 Acciai Speciali Terni Spa Procedimento per la produzione di lamierino di acciaio al silicio a grano orientato
IT1290171B1 (it) * 1996-12-24 1998-10-19 Acciai Speciali Terni Spa Procedimento per il trattamento di acciaio al silicio, a grano orientato.
IT1290977B1 (it) * 1997-03-14 1998-12-14 Acciai Speciali Terni Spa Procedimento per il controllo dell'inibizione nella produzione di lamierino magnetico a grano orientato
IT1290978B1 (it) * 1997-03-14 1998-12-14 Acciai Speciali Terni Spa Procedimento per il controllo dell'inibizione nella produzione di lamierino magnetico a grano orientato
BR9800978A (pt) * 1997-03-26 2000-05-16 Kawasaki Steel Co Chapas elétricas de aço com grão orientado tendo perda de ferro muito baixa e o processo de produção da mesma
KR19990088437A (ko) 1998-05-21 1999-12-27 에모또 간지 철손이매우낮은고자속밀도방향성전자강판및그제조방법
KR100442099B1 (ko) * 2000-05-12 2004-07-30 신닛뽄세이테쯔 카부시키카이샤 저철손 및 저소음 방향성 전기 강판 및 그의 제조 방법
EP1162280B1 (de) * 2000-06-05 2013-08-07 Nippon Steel & Sumitomo Metal Corporation Verfahren zur Herstellung eines kornorientierten Elektrobleches mit ausgezeichneten magnetischen Eigenschaften
KR101131729B1 (ko) * 2004-12-28 2012-03-28 주식회사 포스코 고자속밀도 방향성 전기강판의 제조방법
KR100979785B1 (ko) * 2005-05-23 2010-09-03 신닛뽄세이테쯔 카부시키카이샤 피막 밀착성이 우수한 방향성 전자강판 및 그 제조 방법
CN100418697C (zh) * 2006-05-18 2008-09-17 武汉科技大学 一种高磁感取向电工钢板及其制造方法
CN100436042C (zh) * 2006-05-18 2008-11-26 武汉科技大学 一种薄板坯工艺高磁感取向电工钢板及其制造方法
WO2007149135A2 (en) * 2006-06-16 2007-12-27 Ningbo Signatronic Technologies, Ltd. Anti-theft security marker with soft magnetic bias component
CN100447911C (zh) * 2006-06-16 2008-12-31 李霖 软磁材料偏置片的制造方法及使用该偏置片的防盗声磁标签
DE102007005015A1 (de) * 2006-06-26 2008-01-03 Sms Demag Ag Verfahren und Anlage zur Herstellung von Warmband-Walzgut aus Siliziumstahl auf der Basis von Dünnbrammen
US7942982B2 (en) * 2006-11-22 2011-05-17 Nippon Steel Corporation Grain-oriented electrical steel sheet excellent in coating adhesion and method of producing the same
CN100425392C (zh) * 2007-05-14 2008-10-15 北京科技大学 高硅钢薄板的冷轧制备方法
DE102008039326A1 (de) 2008-08-22 2010-02-25 IWT Stiftung Institut für Werkstofftechnik Verfahren zum elektrischen Isolieren von Elektroblech, elektrisch isoliertes Elektroblech, lamellierter magnetischer Kern mit dem Elektroblech und Verfahren zum Herstellen eines lamellierten magnetischen Kerns
KR101340223B1 (ko) * 2008-12-16 2013-12-10 신닛테츠스미킨 카부시키카이샤 방향성 전자기 강판 및 그 제조 방법
WO2011007771A1 (ja) 2009-07-13 2011-01-20 新日本製鐵株式会社 方向性電磁鋼板の製造方法
EP2455498B1 (de) 2009-07-17 2019-03-27 Nippon Steel & Sumitomo Metal Corporation Verfahren zur herstellung eines kornorientierten magnetischen stahlblechs
EP2578706B1 (de) 2010-05-25 2016-06-08 Nippon Steel & Sumitomo Metal Corporation Verfahren zur herstellung eines kornorientierten elektrostahlblechs
BR122018072170B1 (pt) * 2011-01-12 2019-05-14 Nippon Steel & Sumitomo Metal Corporation Método de fabricação de uma chapa de aço elétrico com grão orientado
WO2013094777A1 (ko) * 2011-12-19 2013-06-27 주식회사 포스코 저철손 고자속밀도 방향성 전기강판 및 이의 제조방법
US10629346B2 (en) * 2012-04-26 2020-04-21 Jfe Steel Corporation Method of manufacturing grain-oriented electrical steel sheet
CN102787276B (zh) * 2012-08-30 2014-04-30 宝山钢铁股份有限公司 一种高磁感取向硅钢及其制造方法
CN104726670B (zh) * 2013-12-23 2017-07-21 鞍钢股份有限公司 一种短流程中薄板坯制备高磁感取向硅钢的方法
KR101647655B1 (ko) 2014-12-15 2016-08-11 주식회사 포스코 방향성 전기강판 및 그 제조방법
KR101676630B1 (ko) * 2015-11-10 2016-11-16 주식회사 포스코 방향성 전기강판 및 그 제조방법
KR101675318B1 (ko) * 2015-12-21 2016-11-11 주식회사 포스코 방향성 전기강판 및 이의 제조방법
JP6748375B2 (ja) 2016-10-19 2020-09-02 Ｊｆｅスチール株式会社 Ｓｉ含有熱延鋼板の脱スケール方法
KR101850133B1 (ko) * 2016-10-26 2018-04-19 주식회사 포스코 방향성 전기강판용 소둔 분리제 조성물, 방향성 전기강판 및 방향성 전기강판의 제조방법
KR102099866B1 (ko) * 2017-12-26 2020-04-10 주식회사 포스코 방향성 전기강판 및 그의 제조방법
KR102044322B1 (ko) * 2017-12-26 2019-11-13 주식회사 포스코 방향성 전기강판 및 그의 제조방법
KR102478960B1 (ko) * 2018-01-25 2022-12-19 닛폰세이테츠 가부시키가이샤 방향성 전자 강판
WO2019146694A1 (ja) 2018-01-25 2019-08-01 日本製鉄株式会社 方向性電磁鋼板
WO2020149344A1 (ja) 2019-01-16 2020-07-23 日本製鉄株式会社 フォルステライト皮膜を有しない絶縁皮膜密着性に優れる方向性電磁鋼板
KR102305718B1 (ko) 2019-12-18 2021-09-27 주식회사 포스코 방향성 전기강판 및 그 제조방법
WO2022186299A1 (ja) * 2021-03-04 2022-09-09 Ｊｆｅスチール株式会社 方向性電磁鋼板の製造方法および方向性電磁鋼板用熱延鋼板
US20240233992A9 (en) * 2021-03-04 2024-07-11 Jfe Steel Corporation Method of manufacturing grain-oriented electrical steel sheet
WO2022250162A1 (ja) * 2021-05-28 2022-12-01 Ｊｆｅスチール株式会社 方向性電磁鋼板の製造方法
CN114717480B (zh) * 2022-04-14 2023-03-03 无锡普天铁心股份有限公司 一种b8≥1.90t中温普通取向硅钢及制造方法
CN121472642B (zh) * 2026-01-11 2026-03-31 合肥格物新材料科技有限公司 一种混固溶Ni-Pd-Re-Sc-Ti精密合金板坯制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0732006A (ja) * 1993-07-22 1995-02-03 Kawasaki Steel Corp 方向性けい素鋼板の冷間圧延方法および冷間圧延機のロール冷却装置
CN1138107A (zh) * 1994-12-05 1996-12-18 川崎制铁株式会社 高磁通密度低铁损晶粒取向的电磁钢板及其制造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636579A (en) * 1968-04-24 1972-01-25 Nippon Steel Corp Process for heat-treating electromagnetic steel sheets having a high magnetic induction
JPS5413846B2 (de) * 1973-06-18 1979-06-02
JPS5423647B2 (de) * 1974-04-25 1979-08-15
US4000015A (en) * 1975-05-15 1976-12-28 Allegheny Ludlum Industries, Inc. Processing for cube-on-edge oriented silicon steel using hydrogen of controlled dew point
US4319936A (en) * 1980-12-08 1982-03-16 Armco Inc. Process for production of oriented silicon steel
US5666842A (en) * 1993-07-22 1997-09-16 Kawasaki Steel Corporation Method of cold rolling grain-oriented silicon steel sheet having excellent and uniform magnetic characteristics along rolling direction of coil and a roll cooling controller for cold rolling mill using the cold rolling method
JP2951852B2 (ja) * 1994-09-30 1999-09-20 川崎製鉄株式会社 磁気特性に優れる一方向性珪素鋼板の製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0732006A (ja) * 1993-07-22 1995-02-03 Kawasaki Steel Corp 方向性けい素鋼板の冷間圧延方法および冷間圧延機のロール冷却装置
CN1138107A (zh) * 1994-12-05 1996-12-18 川崎制铁株式会社 高磁通密度低铁损晶粒取向的电磁钢板及其制造方法

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Publication number Publication date
DE69705282T2 (de) 2001-10-11
KR19980032726A (ko) 1998-07-25
CN1190132A (zh) 1998-08-12
BR9707089A (pt) 1999-03-09
EP0835944B1 (de) 2001-06-20
DE69705282D1 (de) 2001-07-26
EP0835944A1 (de) 1998-04-15
US5885371A (en) 1999-03-23
KR100352675B1 (ko) 2002-11-18

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